Jon Bon Jovi's harsh words for Justin Bieber

Jon Bon Jovi and Justin Bieber

We can't help but to feel sorry for Justin Bieber. After getting booed at the Billboard Music Awards earlier this week, Justin is again enduring some tough criticism — this time from Jon Bon Jovi. In a recent interview with the London Evening Standard, the New jersey rocker slammed Justin for starting a March concert at London's O2 Arena two hours late. "Every generation has guys that do that, none of that is new," Bon Jovi said. "They run the risk of disrespecting their audience members who have worked hard to pay for their ticket, to give you the permission to take two or three hours of their lives — or in that kid's case, 80 minutes of their lives." Justin tweeted the day after the concert that the delay was caused by "technical issues," and claimed he was only 40 minutes late. But that did not deter Bon Jovi from putting Bieber in his place. "Do it once, you can be forgiven," he said. "Do it enough times and shame on you. They won't have you back. Then it just becomes a cliché. It's really not cool — you're an a**hole. Go to f***in' work!"